How to fix leaking exterior wall?

[JustinMcAbbe]

Hello,

I have an edge of the external cladding/wall that leaks after heavy rain. I believe it's just water ingress between the cladding panels. I was thinking of sealing it up and painting over it. I’ve checked the roof and there are no visible leaks. All the houses on this block have the same issue at the edges, so I think it's just due to the design and angle. Any thoughts?

I did quick replacement of the rotting wood not worried a out that, just want to stop the water engress.

[JacobZ]

Hi @JustinMcAbbe,

Thank you for your question.

The last thing you want to do is seal the location where the water is draining from. If you do that, the water will have nowhere to drain and will sit behind the cladding, rotting everything and creating mould.

You're going to have to locate where the water is getting in and stop it at the source.

It could be that the cladding was installed incorrectly, and the horizontal gaps between the cladding are allowing water in.

If this is the source of the water, then you will need to seal the lines between the cladding with No More Gaps Exterior Gap Filler and then paint over it.

If this is not the source of the leak, I would suggest you contact a leak detection specialist for their assistance locating the source of the water.

Let me know if you have any further questions.

Jacob